scan_results.php Script Function Explained
| File Name: scan_results.php |
| This code is written in PHP and performs a scanning operation on a specified folder for HTML files. It checks each HTML file in the folder for any <img> tags that do not have an alt attribute. It then generates a report of the scanned files and the issues found. |
| Here is a step-by-step explanation of the code: |
| 1. The code starts with some error reporting settings to display any errors that occur during execution. |
| 2. The value of the folder parameter is retrieved from the URL query string using $_GET['folder']. The ?? operator is used to provide a default value of an empty string if the folder parameter is not present. This parameter represents the folder that needs to be scanned. |
| 3. A block of code is used for debugging purposes, marked with comments "Debugging code block ---- START --- 1" and "Debugging code block ---- END --- 1". This block checks if the specified folder exists, is a directory, and is readable. If any of these conditions are not met, it outputs an error message and stops the execution. |
| 4. The glob() function is used to find all the HTML files (*.html) in the specified folder. The result is an array of file names. |
| 5. The array of file names is converted to a JSON string using the json_encode() function. This JSON string will be used later to print the list of files to the browser console using JavaScript. |
| 6. The list of files is printed to the browser console using an echo statement with a JavaScript code embedded in HTML. The JavaScript code logs the list of files to the console using console.log(). |
| 7. A variable $results and $totalFilesScanned are initialized. $results will hold information about the files with missing alt attributes, and $totalFileScanned will store the count of total files scanned. |
| 8. The code checks if the folder parameter is not empty and is a directory using is_dir(). If the condition is true, it proceeds to scan the HTML files in the folder. |
| 9. Inside the loop, each HTML file is read using file_get_contents(), and the content is stored in the $content variable. |
| 10. The preg_match_all() function is used with a regular expression (/<img[^>]*>/i) to find all the <img> tags in the HTML content. The result is stored in the $matches array. |
| 11. A loop is used to iterate over the $matches[0] array, which contains all the <img> tags found in the HTML. |
| 12. For each <img> tag, it checks if there is no alt attribute present by using strpos() to find the position of "alt=" |
| 13. in the tag. If the alt attribute is not found, it adds the whole <img> tag to the $issues array.If the $issues array is not empty, it means there are missing alt attributes. In that case, it creates an associative array with the file name (basename($file)), the count of issues (count($issues)), and the extracted code (implode('<br>', $issues)). This array is then added to the $results array. |
| 14. The HTML content for the scan results is generated using output buffering and HTML markup. The $totalFilesScanned variable is included to display the total number of files scanned. |
| 15. The $results array is iterated over using a foreach loop to display the file name, issue count, and extracted code in a table. |
| 16. Some JavaScript and CSS dependencies are included using <script> and <link> tags to enhance the functionality and styling of the page. |
| 17. Another JavaScript code block is included to load the navigation and highlight the active menu item based on the current page. It fetches the navigation HTML from /navigation.html and inserts it into the designated container. |
| 18. The HTML content, including the scan results and navigation, is printed to the browser. |
| 19. The generated HTML content is then saved to a file using file_put_contents(). The file name is generated using the current date and time. |
| 20. Finally, the user is redirected to the newly created page using the header() function and the Location header. The exit statement is used to stop further execution after the redirection. |
Find what version of PHP the system is using
php -v
Find where the php.ini file is located
php
Find what version of PHP is being used in the virtual host
Step 1: Create a webpage called "info.php" and paste the following code.
<?php
phpinfo();
?>
then go to this webpage: https://example.com/info.php
Restart Apache2 after modifying PHP.ini
sudo service apache2 restart
If your PHP script is not able to create or not creating a file in the desired folder.
run the following permission scripts
sudo chown -R www-data:www-data /path/to/folder-for-php/write-file-folder/
also ensure the folder is set to 755 permissions by using the script below
sudo chmod 775 /path/to/folder-for-php/write-file-folder/
Fix PHP permission issue with not being able to write output to specified folder If your PHP script is not able to create or not creating a file in the desired folder. run the following permission scripts
How to view Virtual Host PHP version
run the following permission scripts
sudo chown -R www-data:www-data /path/to/folder-for-php/write-file-folder/
also ensure the folder is set to 755 permissions by using the script below
sudo chmod 775 /path/to/folder-for-php/write-file-folder/
<?php
phpinfo();
?>
Then open it in your browser at "https://example.com/info.php"
Explain the script & requirments.
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